JPH0494705A - Filter device - Google Patents

Abstract

PURPOSE:To obtain the compact filter device having high filtration efficiency and a greater degree of freedom for the pipeline, etc., at a low cost by providing plural inner cylinders in one cylindrical outer vessel and filtering a liq. by the filters in the inner cylinders. CONSTITUTION:The cylinder outer vessel 10 provided with a lid 40 is divided by a partition plate 50 into upper and lower rooms R1 and R2, and an inlet 11 for a fluid to be filtered is furnished to the upper room R1 and an outlet 12 for the fluid filtered to the lower room R2. Plural inner cylinders 20 are arranged in the vessel 10 and allowed to pierce the partition plate 50, and a filter 30 is set in each cylinder 20. The fluid introduced into the upper room R1 is supplied to the inner cylinder 20 from its upper opening 22, passed through the filter 30, filtered and introduced into the lower room R2. The upper opening 22 is moved to a backwashing fluid discharge port 41 furnished to the lid 40 by a rotating shaft 60 and a lever 70 and connected, and the filtered fluid is introduced into the inner cylinder 20 connected to the discharge port 41 from the lower room R2 and passed through the filter 30 in the direction opposite to filtration.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a filtration device that filters oil and other fluids and can be used in marine and other industrial fields, and particularly relates to a filtration device that filters oil and other fluids and can be used in marine and other industrial fields. This invention relates to a filtration device that can be replaced or regenerated.

<Prior Art> Filters that can be maintained without interrupting fluid supply are called switching type or dual type filters, and have been conventionally used as so-called strainers in diesel engines, oil supply systems, etc. And this conventional double strainer is
In most cases, two filtration devices each having a filter housed therein are used, and these are switched by a flow path switching means.

FIG. 4 shows that two filtration devices 1.2 are switched by a switching means using a cock 3, and one of the filtration devices is used.
An example of a conventional filtration device in which the other one is placed in a dormant state for maintenance is shown.

FIG. 5 also shows two filtration devices 1.2 with cylinder valve 4.
An example of a conventional filtration device is shown in which one of the filtration devices is used while the other is put in a dormant state and used for maintenance.

Further, FIG. 6 shows an example of a conventional filtration device in which two filtration devices 1.2 are opened and closed by four valves (cocks) 5. As shown in FIG.

<Problems to be Solved by the Invention> However, in the above-mentioned cock-type duplex filtration device, since the cock part is a cast product of cast iron, cast steel, gunmetal, etc., there are the following problems.

(2) The height and direction of the piping ports for the inflow and outflow of the fluid to be filtered are determined by the wooden mold (model) and cannot be easily changed as necessary. In addition, in the case of a two-circuit cock as shown in FIG. 4, the piping ports must be adjacent to each other, so even if the wooden mold is changed, there is little flexibility in responding.

■The sealing surface of the cock requires grinding and wrapping after machining, which requires skilled skill and time. Moreover, if the surface pressure is increased to improve the degree of sealing of the cock, a large amount of force is required to turn the cock, and if the seal is released at the time of switching, which is often the case with large models, the fluid before and after filtration is There is a problem that it gets mixed up.

(2) Also, the channels inside the casting are usually curved, and it takes a considerable amount of man-hours to remove the sand from that part and smooth the surface. Also, casting defects such as cavities are likely to occur.

Furthermore, if special consideration is given to disaster prevention, for example, cast steel may be used instead of cast iron, but due to differences in shrinkage rates due to material changes, it may not be possible to share the same wooden pattern.

(2) Also, in the cock type, the cock needs to be located separately from the two filtering devices, occupying a considerable amount of space, and has the problem of being bulky. This is a big problem especially in ships where compactness is required.

(2) Of course, in the cock type shown in FIG. 4, only one of the filtration devices is normally operated, and the remaining one is in a dormant state, making it inefficient despite its high efficiency.

In addition, in the above-mentioned dual cylinder valve type filtration device,
There were the following problems.

(2) Since the valves on the inflow and outflow sides need to be opened and closed in synchronization, both cylinders need to be adjacent to each other, and as a result, there is little freedom in the height and direction of the piping ports in the filtration device.

(2) It is necessary to install the cylinder valve 4 separately from the two filtration devices 1.2, and the stroke of the valve rod that must be moved forward and backward becomes large, resulting in a problem that the installation space becomes large.

■The manufacturing cost is higher than the cock method.

Further, the above-mentioned duplex filtration device using four valves has the following problems.

0.4 valves must be opened and closed individually, resulting in poor operability.

(2) As the diameter of the piping increases, the weight and space occupied by the four valves increases, making them bulkier.

■The manufacturing cost is higher than the cock method.

SUMMARY OF THE INVENTION It is an object of the present invention to overcome these drawbacks of conventional devices and to provide a filtration device that is extremely compact, has good filtration efficiency, has a large degree of freedom in piping, etc., and is low in manufacturing cost.

In order to achieve the above object, the filtration device of the present invention has an interior partitioned into upper and lower chambers by a partition plate, an inlet for the fluid to be filtered in the upper chamber, and an inlet for the fluid to be filtered in the lower chamber. a cylindrical outer container with a lid provided with an outlet for fluid; a plurality of inner cylinders disposed within the cylindrical outer container so as to penetrate through the partition plate; and a plurality of inner cylinders disposed within the respective cylinders. a filter, wherein the fluid to be filtered introduced into the upper chamber enters from the upper opening of the inner cylinder, is filtered through the internal filter, and is guided to the lower chamber. An inner cylinder moving connection means is provided for moving and connecting the upper opening of the inner cylinder to a backwash fluid outlet provided in the lid of the cylindrical outer container, and an inner cylinder connected to the backwash fluid outlet is provided. The tube is characterized in that the filtered fluid enters the tube from the lower chamber and passes through an internal filter in a direction opposite to the filtration direction.

<Operation> 2. According to the feature of the present invention, a plurality of filters and an inner cylinder containing the filters are provided in one cylindrical outer container to perform multiple filtration, making the device extremely compact. . Furthermore, multiple filtration can be performed without requiring a separate channel switching means as in the prior art. Furthermore, the positions of the inlet and outlet for the fluid to be filtered in the cylindrical outer container are not particularly limited throughout the 360 degrees outside the container, and the inlet and outlet can be installed at any position depending on the space situation around the device. -Can be done.

In addition, by connecting some of the plurality of inner cylinders to the backwash fluid discharge port using the inner cylinder movement connecting means, filtration is performed in the other inner cylinders, and during the filtration operation, the backwash fluid discharge port is connected to the inner cylinders. For the inner cylinder connected to the outlet, a portion of the filtered fluid will flow in the opposite direction within the inner cylinder to backwash the filter. In other words, without taking out the filter etc.
Furthermore, backwash operation of some filters can be performed simultaneously during filtration operation.

〈Example〉 Figure 1 is a longitudinal sectional view of an apparatus implementing the present invention, and Figure 2 is the same. show. FIG. 3 is a plan view of the implementation device, with the lid partially removed.

A plurality of (three in this embodiment) inner cylinders 2 are provided in the cylindrical outer container 10.
0 is provided, and a filter 30 is disposed within each inner cylinder 20. Further, a lid 40 is provided at the upper opening of the cylindrical outer container 10.

The inner space of the cylindrical outer container 10 is partitioned into upper and lower chambers R0 and R2 by a partition plate 50, with an inlet 11 for the fluid to be filtered in the upper chamber R4 and an outlet 12 for the filtered fluid in the lower chamber R2. It is provided.

The partition plate 50 is tightly and airtightly engaged with the catch seat 13 provided all around the inner wall of the cylindrical outer container 10 at the center thereof, and is connected to the central rotating shaft by means of a longitudinal key 51. It is designed so that it can be rotated in one rotation with 60 rotations.

The inner cylinder 20 is open in the vertical direction, passes through the partition plate 50, and is hermetically engaged with the opening of the partition plate 50 at an engaging portion 21 on the outer side of the inner cylinder. From the state shown in FIG. 1, the inner cylinder 20 can be moved upwards independently with respect to the partition plate 50, as shown in 2M. Also, a portion of each inner cylinder 20 below the engaging portion 21 (a portion corresponding to the lower chamber R2)
A plurality of small through holes 24 are provided in the.

The filter 30 is installed in the inner cylinder 20 so that it can be removed and not wobble, so that the fluid to be filtered that enters from the upper opening 22 of the inner cylinder 20 always passes through the filtration part of the filter 30. It is designed to be guided to the lower chamber R2 from the lower opening 23 of the inner cylinder 20 or from the small through hole 24. In the embodiment, the filtration section is composed of a wire mesh body 31 and a punching metal 32 for reinforcing the same, but it is not limited to this, and may be made of various materials such as one using a porous sintered body. can be used.

During filtration operation, the sent fluid to be filtered enters the upper chamber R3 of the cylindrical outer container 10 from the inlet 11, further enters the inner cylinder 20 from the upper opening 22 of the inner cylinder 20, and is filtered by the filter 30. The filtered fluid enters the lower chamber R2 from the lower opening 23 or the small through hole 24 of the inner cylinder 20, and is further led to the outside from the outlet 12. I can put it out.

In this case, the fluid to be filtered that enters from the inlet 11 is prevented from being directly guided to the filter 30 by the inner cylinder 20, and the filtered fluid that exits the filter 30 is also prevented from being directly guided by the inner cylinder 20. being guided to the outlet 12. In other words, the inner cylinder 20 prevents unevenness in the amount of filtering through different parts of the filter 30, and improves the filtration effect. The fluid to be filtered includes oil and other fluids, and the type of fluid is not particularly limited. Further, the inlet 11 and the outlet 12 need only communicate with the corresponding chambers R1 and R2, respectively, and can be provided with a degree of freedom of 360 degrees on the outside of the cylindrical outer container 10.

The upper part of the rotating shaft 60 passes through the lid 40 of the cylindrical outer container 10 and projects upward, and is connected to the base 71 of the lever 70 via a key 72. Therefore, when the lever 70 is rotated, the rotating shaft 60 also rotates, and thereby each inner cylinder 20 containing the filter 30 rotates together with the partition plate 50 around the rotating shaft 60.

Furthermore, the rotating shaft 60 protrudes from the cylindrical outer container 10.
The base 81 of the handle 80 is inserted into the vicinity of the motorcycle and is prevented from coming off with a naso I.82. The base 81 of this handle 80 is screwed together with the base 71 of the lever 70,
Moreover, it is designed to be able to freely rotate with respect to the rotating shaft 60. Therefore, when the handle 80 is rotated and its base 81 is moved upward relative to the fixed base 71 of the lever 70, the rotating shaft 60 rises together with the base 81 without rotating. The lever 70 is fixed with a screw 91.
This is done by fixing the lever 70 to the screw receiver 92. Further, when the rotating shaft 60 is raised, the key 72 moves relatively within the vertical keyway 61 formed in the rotating shaft 60. Further, the partition plate 50 and the rotating shaft 60 are also moved relative to each other by the vertical direction key 51.

A backwash fluid outlet 41 is provided at one location on the lid 40 . This backwash fluid discharge port 41 is provided with a closing lid 43 having a backwash fluid discharge valve 42 on its upper surface. Further, the upper opening 22 of the inner cylinder 20 is located on the lower surface side of the backwash fluid outlet 41.
An airtight connection port 101 is provided.

An airtight lower lid 102 for airtightly sealing the lower opening 23 of the inner cylinder 20 is provided opposite to and directly below the backwash fluid outlet 41 and the airtight connection port 101.

This airtight lower lid 102 has a shaft 103 connected to the rotary wheel 60 through a connecting plate 104, and moves up and down as the rotary shaft 60 moves up and down. The connecting plate L (14 is free against rotation of the rotating shaft 60; 105 is a bearing for the airtight lower lid 102; 62 is a bearing for the rotating shaft 60; 63 is an inner cylinder fixed to the rotating shaft 60); It is a forced descent ring.

For example, when a filtration operation is performed using all the filters 30 in the three inner cylinders 20, all three inner cylinders 20 are equipped with the backwash fluid, as shown in FIG. It is placed in a state where it is not connected to the discharge port 41.

On the other hand, two of the three can be used for filtration, and the remaining one can be backwashed. In this case, first lever 7
The inner cylinder 20 of the filter 30 to be backwashed by rotating the
is moved to just below the backwash fluid outlet 41. The movement is
The rotation of the lever 70 causes the rotating shaft 60 to rotate via the lever base 71, which causes the partition plate 50 to rotate, which in turn causes the inner cylinder 20 to rotate. When the inner cylinder 20 is located directly below the backwash fluid outlet 41, the lever 70 is fixed to the screw receiver 92 with a screw 91. Actually lever 7
0 to the screw receiver part 92, the inner cylinder 20
is located directly below the backwash fluid outlet 41. Therefore, the screw receiver portions 92 are provided at three locations on the lid 40 at rotational intervals of 120 degrees.

After the lever 70 is fixed with the screw 91, the handle 80 is then turned to raise the rotating shaft 60.

As the rotating shaft 60 rises, the airtight lower lid 102 also rises, sealing the lower opening 23 of the inner cylinder 20. Then, it rises further and the upper opening 22 of the inner cylinder 20 fits into the airtight connection port 101, completing the connection. The inner cylinder 20 is connected to the lever 70, the handle 80, the rotating shaft 60, the airtight lower lid 102, etc.
A mobile connection means is constructed. When filtration operation is started with one of the inner cylinders 20 connected to the backwash fluid outlet 41 (the state shown in FIG. 2), the fluid to be filtered entering from the inlet 11 is connected to the backwash fluid outlet 41. The two inner cylinders 20 remaining from the upper chamber R+, excluding the inner cylinder 20 that has been removed (the inner cylinder on the left side in Fig. 2)
The water enters through the upper opening 22 of the filter and is filtered through the filter 30. Most of the filtered fluid that has entered the lower chamber R2 through the lower opening 23 and the small through hole 24 of the inner cylinder 20 is transferred to the outlet 12.
A part of the filtered fluid flows through the inner cylinder 20 (connected to the backwash fluid outlet 41 from the lower chamber R2).
It enters the inner cylinder (on the left side of FIG. 2) through the small through hole 24, and further passes through the filter 30 in the opposite direction to that during filtration to backwash the filter 30. Then, it passes through the backwash fluid discharge port 41, passes through the opened backwash fluid discharge valve 42, and is led out to the outside. When backwashing is not performed, the backwash fluid discharge valve 42 may be closed.

During normal operation, the three inner cylinders are in a filtering state. Then, for example, the inner cylinders 20 are sequentially backwashed one by one at every appropriate operating time. Of course, the inner cylinder 20 may be backwashed as appropriate. Alternatively, a differential pressure gauge may be attached to backwash each inner cylinder 20 when the filtration performance of each inner cylinder 20 falls below a certain level. Even during backwashing, the filtration operation continues in the other inner cylinders 20 without being interrupted. To change the inner cylinder to be backwashed, first close the valve 42 and turn the handle 8o to lower the inner cylinder 20 connected to the backwash fluid outlet 41. At this time, the inner cylinder forced lowering ring 63 of the rotating shaft 60 ensures the lowering of the inner cylinder 20. When the descent is finished, lever 70
Release the fixation, turn the lever 70, align the lever 70 with another screw receiver 92, and fix the screw 91.

This brings another inner cylinder 20 directly below the backwash fluid outlet 41. Therefore, use the handle 80 to close the inner cylinder 20 to the airtight lower lid 1.
02 and connect it to the airtight connection port 101. This completes the work to change the inner cylinder for backwashing.

” 2, the lever 70 and the rotating shaft 60 are connected to the inner cylinder 20.
This constitutes a moving means for moving the backwash fluid to a position directly below the backwash fluid discharge port 41. Of course, in the present invention, any moving means that can move the inner cylinder 20 of the filter to be backwashed to directly below the backwash fluid outlet 41 can be used, such as the lever 70 and the rotating shaft 60. It is not limited to the combination of. Furthermore, in the embodiment, the inner cylinder 20 is moved to just below the backwash fluid outlet 41 for alignment, but conversely, the backwash fluid outlet 41 side is moved to the inner cylinder 20 side for alignment. A means may be provided. In other words, the moving means may be one that moves the inner cylinder 20 side or one that moves the backwash fluid outlet 41, and in short, as long as it is possible to align the two, it is particularly dependent on the specific configuration. It is not limited.

On the other hand, in the above, the handle 80, the rotating shaft 60, the airtight lower lid 102, and the airtight connection port 10] seal the lower opening 23 of the aligned inner cylinder 20 and the upper opening 22.
This constitutes a connection means for airtightly connecting the backwash fluid outlet 41 to the backwash fluid outlet 41. In the embodiment, the airtight lower cover 102 is moved upward by turning the handle 80 and moving the rotating shaft 60 upward, but the specific means for moving the airtight lower cover 102 upward is not particularly limited, and for example, hydraulic Airtight lower lid using means 1
02 may be moved upward.

Further, as a connection means, the airtight lower lid 10 is connected to the inner cylinder 20.
2 and the airtight connection port 101 may be connected by moving from above and below. In other words, as a connection means,
The specific means is not limited as long as the upper opening 22 of the inner cylinder 20 can be airtightly connected to the backwash fluid outlet 41.

Furthermore, in this embodiment, the backwash fluid outlet 41 is provided at one location, but it is provided corresponding to the position of each inner cylinder 20,
The inner cylinder 20 may be connected to the backwash fluid outlet 41 by moving it up and down on the spot without rotating it.

In addition, the airtight lower cover 102 connects the inner cylinder 20 to the airtight connection port 1.
01, and it is not necessary to seal the lower opening 23 of the inner cylinder 20. Backwashing can be performed even if the lower opening 23 is not sealed.

<Effects> The present invention has the above configuration, and according to the filtration device according to claim 1, by using one cylindrical outer container and providing a plurality of inner cylinders therein, the inside of each inner cylinder is Since filtration can be performed simultaneously with two filters, it is possible to provide a dual-type filtration device that is extremely compact and requires less installation space.

Furthermore, there is no need for flow path switching means such as cocks, cylinders, valves, etc., which were required in the past, and the internal space required for these flow path switching means can be eliminated, and the high cost required for flow path switching means can be reduced. .

In addition, there are almost no positional restrictions on the inlet or outlet of the fluid to be filtered, and the degree of freedom for design changes in the size and arrangement of the device can be greatly increased, resulting in sufficient space savings and cost reductions. I can do it.

Moreover, in particular, in the present invention, while a plurality of filters are in filtration operation, some of the filters can be backwashed at the same time, so that there are few interruptions in operation, etc., and extremely efficient filtration can be achieved. I can do it.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of an apparatus for implementing the present invention, and FIG. 2 is also a longitudinal cross-sectional view of the apparatus for implementing the present invention, showing a state in which a part of the inner cylinder can be used to backwash the filter. Figure 3 is a plan view of the implementation device.
A diagram showing a state in which the lid is partially removed, and FIGS. 4 to 6 are schematic configuration diagrams of a conventional filtration device, respectively. 10: Cylindrical outer container 11: Inlet for filtered fluid 12: Outlet for filtered fluid 20: Inner cylinder 30: Filter 40: Old lid: Backwash fluid outlet 50: Partition plate 60; Rotating shaft 70 Nilever 80 :handle

Claims (1)

[Claims] (1) A cylindrical outer container with a lid, the interior of which is partitioned into upper and lower chambers by a partition plate, an inlet for the fluid to be filtered in the upper chamber, and an outlet for the filtered fluid in the lower chamber; A plurality of inner cylinders are arranged in the upper and outer containers so as to pass through the partition plate, and a filter is arranged in each of the inner cylinders, and the fluid to be filtered introduced into the upper chamber is A filtration device configured to enter through an upper opening of the inner cylinder, filter through an internal filter, and be guided to a lower chamber, wherein the upper opening of the inner cylinder is provided in the lid of the cylindrical outer container. An inner cylinder moving connection means is provided for moving the inner cylinder to the backwash fluid outlet and connecting the inner cylinder to the backwash fluid outlet, and the filtered fluid enters the inner cylinder connected to the backwash fluid outlet from the lower chamber and connects the inner cylinder to the inner filter. A filtration device characterized in that the filtration device is configured to pass in a direction opposite to a filtration direction.